Bird's-nest fern is a common name applied to several related species of epiphytic ferns in the genus Asplenium. They grow in a tight, nest-like clump with a lingulate leaf rosette. Species known as bird's nest fern include: A. nidus (bird's-nest fern) A. australasicum (crow's-nest fern) A. antiquum A. cymbifolium A. serratum (wild bird's-nest fern)